MF3306 CNC MACHINING TECHNOLOGY SYLLABUS | ANNA UNIVERSITY BE MANUFACTURING ENGINEERING 5TH SEMESTER SYLLABUS REGULATION 2008 2011 2012-2013

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MF3306 CNC MACHINING TECHNOLOGY SYLLABUS | ANNA UNIVERSITY BE MANUFACTURING ENGINEERING 5TH SEMESTER SYLLABUS REGULATION 2008 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY FIFTH SEMESTER BE MANUFACTURING ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS, IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI,TIRUNELVELI,COIMBATORE), 2008 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009


MF3306 CNC MACHINING TECHNOLOGY L T P C
3 0 0 3
AIM:
To provide knowledge on principle, constructional features, programming, tooling and
work holding devices in CNC machine tools
OBJECTIVE:
Upon completion of this subject, student will be able to:
 Understand evolution and principle of CNC machine tools
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 Describe constructional features of CNC machine tools
 Explain drives and positional transducers used in CNC machine tools
 Write simple programs for CNC turning and machining centres
 Generate CNC programs for popular CNC controllers
 Describe tooling and work holding devices for CNC machine tools
UNIT I INTRODUCTION TO CNC MACHINE TOOLS 6
Evolution of CNC Technology, principles, features, advantages, applications, CNC and
DNC concept, classification of CNC Machines – turning centre, machining centre,
grinding machine, EDM, types of control systems, CNC controllers, characteristics,
interpolators– Computer Aided Inspection
UNIT II STRUCTURE OF CNC MACHINE TOOL 10
CNC Machine building, structural details, configuration and design, guide ways –
Friction, Anti friction and other types of guide ways, elements used to convert the rotary
motion to a linear motion – Screw and nut, recirculating ball screw, planetary roller
screw, recirculating roller screw, rack and pinion, spindle assembly, torque transmission
elements – gears, timing belts, flexible couplings, Bearings.
UNIT III DRIVES AND CONTROLS 9
Spindle drives – DC shunt motor, 3 phase AC induction motor, feed drives – stepper
motor, servo principle, DC and AC servomotors, Open loop and closed loop control, Axis
measuring system – synchro, synchro-resolver, gratings, moiré fringe gratings,
encoders, inductosysn, laser interferometer.
UNIT IV CNC PROGRAMMING 11
Coordinate system, structure of a part program, G & M Codes, tool length compensation,
cutter radius and tool nose radius compensation, do loops, subroutines, canned cycles,
mirror image, parametric programming, machining cycles, programming for machining
centre and turning centre for well known controllers such as Fanuc, Heidenhain,
Sinumerik etc., generation of CNC codes from CAM packages.
UNIT V TOOLING AND WORK HOLDING DEVICES 9
Introduction to cutting tool materials – Carbides, Ceramics, CBN, PCD–inserts
classification- PMK, NSH, qualified, semi qualified and preset tooling, tooling system for
Machining centre and Turning centre, work holding devices for rotating and fixed work
parts, economics of CNC, maintenance of CNC machines.
TOTAL : 45 PERIODS
TEXT BOOKS
1. “Mechatronics”, HMT, Tata McGraw-Hill Publishing Company Limited, New Delhi,
2005.
2. Warren S.Seamers, “Computer Numeric Control”, Fourth Edition – Thomson Delmar,
2002.
REFERENCES
1. James Madison, “CNC Machining Hand Book”, Industrial Press Inc., 1996.
2. Ken Evans, John Polywka & Stanley Gabrel, “Programming of CNC Machines”,
Second Edition – Industrial Press Inc, New York, 2002
3. Peter Smid, “CNC Programming Hand book”, Industrial Press Inc., 2000
4. Berry Leathan – Jones, “Introduction to Computer Numerical Control”, Pitman,
London, 1987.
5. Radhakrishnan P “Computer Numerical Control Machines”, New Central Book
Agency, 2002.
6. Rao P.N., CAD/CAM, Tata McGraw-Hill Publishing Company Limited, New Delhi,
2002.